Related to
this thread I was wondering about dnd tropes that seem to just get it wrong.
For example, the idea that gnomes and halflings need some special explanation for why they haven't been overrun by the bigger races. Absurd! Halfings are more nimble/graceful/agile, thus more accurate with ranged weapons, luckier, less prone to fear, and can get cover much easier. Trying to invade halfling lands would be an absolute nightmare. Your grandkids would wake up screaming a hundred years later.
Meanwhile, gnomes are much smarter than humans, and resistent to a pretty wide array of magical effects. Then, forest gnomes have illusion magic that creates potentially detailed illusions that are bigger than the caster, and can talk to small and smaller animals. Rock gnomes have a whole damn tech level on the rest of the world.
Just the fact that they can hide more easily, and get physical cover against ranged attacks more easily, makes this idea bunk, and yet it persists.
So, what are some other examples? Challenge: don't crap on anyone elses examples. It's a plus thread, so keep it positive and roughly on topic.